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Data Engineering
Join discussions on data engineering best practices, architectures, and optimization strategies within the Databricks Community. Exchange insights and solutions with fellow data engineers.
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Forum Posts

Tim_T
by New Contributor
  • 1676 Views
  • 0 replies
  • 0 kudos

Are training/ecommerce data tables available as CSVs?

The course "Apache Sparkâ„¢ Programming with Databricks" requires data sources such as training/ecommerce/events/events.parquet. Are these available as CSV files? My company's databricks configuration does not allow me to mount to such repositories, bu...

  • 1676 Views
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Hitesh_goswami
by New Contributor
  • 1995 Views
  • 1 replies
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Upgrading Ipython version without changing LTS version

I am using a specific Pydeeque function called ColumnProfilerRunner which is only supported with Spark 3.0.1, so I must use 7.3 LTS. Currently, I am trying to install "great_expectations" library on Python, which requires Ipython version==7.16.3, an...

  • 1995 Views
  • 1 replies
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Latest Reply
Anonymous
Not applicable
  • 0 kudos

@Hitesh Goswami​ : please check if the below helps!To upgrade the Ipython version on a Databricks 7.3LTS cluster, you can follow these steps:Create a new library installation command using the Databricks CLI by running the following command in your l...

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JGil
by New Contributor III
  • 5021 Views
  • 5 replies
  • 0 kudos

Installing Bazel on databricks cluster

I am new to azure databricks and I want to install a library on a cluster and to do that I need to install bazel build tool first.I checked the site bazel but I am still not sure how to do it in databricks?I appriciate if any can help me and write me...

  • 5021 Views
  • 5 replies
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Latest Reply
Avinash_94
Databricks Employee
  • 0 kudos

Databricks migrated over from the standard Scala Build Tool (SBT) to using Bazel to build, test and deploy our Scala code. Follow this doc https://www.databricks.com/blog/2019/02/27/speedy-scala-builds-with-bazel-at-databricks.html

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4 More Replies
afzi
by New Contributor II
  • 4500 Views
  • 1 replies
  • 1 kudos

Pandas DataFrame error when using to_csv

Hi Everyone, I would like to a Pandas Dataframe to /dbfs/FileStore/ using to_csv method.Usually it would just write the Dataframe to the path described but It has been giving me "FileNotFoundError: [Errno 2] No such file or directory: '/dbfs/FileStor...

  • 4500 Views
  • 1 replies
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Latest Reply
Avinash_94
Databricks Employee
  • 1 kudos

f = open("/dbfs/mnt/blob/myNames.txt", "r")

  • 1 kudos
User16826992783
by Databricks Employee
  • 1989 Views
  • 1 replies
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Why are some of my AWS EBS volumes in my workspace unencrypted?

I noticed that 30GB of my EBS volumes are unencrypted, is there a reason for this, and is there a way to encrypt these volumes?

  • 1989 Views
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Latest Reply
Abishek
Databricks Employee
  • 0 kudos

https://docs.databricks.com/security/keys/customer-managed-keys-storage-aws.html#introductionThe Databricks cluster’s EBS volumes (optional) - For Databricks Runtime cluster nodes and other compute resources in the Classic data plane, you can option...

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wb
by New Contributor II
  • 1798 Views
  • 1 replies
  • 2 kudos

Import paths using repos and installed libraries get confused

We use Azure Devops and Azure Databricks and have custom Python libraries. I placed my notebooks in the same repo and the structure is like this:mylib/ mylib/__init__.pyt mylib/code.py notebooks/ notebooks/job_notebook.py setup.pyAzure pipelines buil...

  • 1798 Views
  • 1 replies
  • 2 kudos
Latest Reply
Avinash_94
Databricks Employee
  • 2 kudos

It looks for the configs locally i suppose if you can share requirements .txt i can elaborate

  • 2 kudos
User16826990884
by Databricks Employee
  • 3299 Views
  • 1 replies
  • 1 kudos

Delta log retention

Is there an impact on performance if I increase the Delta log retention to 3000?

  • 3299 Views
  • 1 replies
  • 1 kudos
Latest Reply
DD_Sharma
Databricks Employee
  • 1 kudos

There will be no performance impact if you want to keep " Delta log retention to 3000". However, it will increase the storage cost so it's not advisable to use a large number until really needed for the business use cases.The default delta.logRetenti...

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Saurabh98290
by New Contributor II
  • 1565 Views
  • 1 replies
  • 2 kudos

Best Suited Language To Parallelize Notebook

I would like to know if we are writing code for parallel execution on notebook which language is best suited for that Python or Scala.

  • 1565 Views
  • 1 replies
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Latest Reply
User16756723392
Databricks Employee
  • 2 kudos

You need to test in Python and scala based on the complexity one of it outperforms the other. In few cases Python was faster where as in other Scala. It is all about the efficiency of the code

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NimaiAhl
by New Contributor II
  • 1872 Views
  • 1 replies
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External Tables - SQL

To create external tables we need to use the location keyword and use the link for the storage location, in reference to that does the user need to have permission for the storage location if not then will we use storage credentials to provide the ac...

  • 1872 Views
  • 1 replies
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Latest Reply
Anu-sha
Databricks Employee
  • 0 kudos

Hi Nimai, That's partially right. You can grant permissions directly on the storage credential, but Databricks recommends that you reference it in an external location and grant permissions to that instead. An external location combines a storage cre...

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Kotofosonline
by New Contributor III
  • 3435 Views
  • 1 replies
  • 2 kudos

Query with distinct sort and alias produces error column not found

I’m trying to use sql query on azure-databricks with distinct sort and aliasesSELECT DISTINCT album.ArtistId AS my_alias FROM album ORDER BY album.ArtistIdThe problem is that if I add an alias then I can not use not aliased name in the order by cla...

  • 3435 Views
  • 1 replies
  • 2 kudos
Latest Reply
User16756723392
Databricks Employee
  • 2 kudos

SELECT album.ArtistId ,DISTINCT album.ArtistId AS my_alias FROM album ORDER BY album.ArtistIdCan you try this

  • 2 kudos
UmaMahesh1
by Honored Contributor III
  • 3785 Views
  • 1 replies
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Checkpoint issue when loading data from confluent kafka

I have a streaming notebook which fetches messages from confluent Kafka topic and loads them into adls. It is a streaming notebook with the trigger as continuous processing. Before loading the message (which is in Avro format), I'm flattening out the...

  • 3785 Views
  • 1 replies
  • 2 kudos
Latest Reply
Avinash_94
Databricks Employee
  • 2 kudos

Best approach is to not to depend on Kafka’s commit mechanism! We can store processing result and message offset to external data store in the same database transaction. So, if the database transaction fails, both commit and processing will fail and ...

  • 2 kudos
Himanshu1
by New Contributor II
  • 3574 Views
  • 1 replies
  • 3 kudos

How to read XML files in delta live tables?

Even after maven library installation using the Auto installation.spark.read.option("rowTag", "tag").xml("dbfs:/mnt/dev/bronze/xml/fileName.xml")not working.

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  • 3574 Views
  • 1 replies
  • 3 kudos
Latest Reply
DD_Sharma
Databricks Employee
  • 3 kudos

At present DLT does not support installing the maven library from the DLT pipeline. In the future this feature will come for sure so please wait for some time and keep checking data bricks runtime release docs https://docs.databricks.com/release-note...

  • 3 kudos
samruddhi
by New Contributor
  • 2532 Views
  • 1 replies
  • 0 kudos

Issue while creating Workspace in databricks using AWS

I am trying to configure databricks with AWS, I have configured the cloud resources as described in this https://docs.databricks.com/administration-guide/account-api/iam-role.html#language-Databricks%C2%A0VPC I have selected "Your VPC Default" as the...

image.png
  • 2532 Views
  • 1 replies
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Latest Reply
Abishek
Databricks Employee
  • 0 kudos

@samruddhi ChitnisCan you please check the below troubleshooting guide : Credentials configuration error messages: Malformed request: Failed credential configuration validation checksThe list of permissions checks in the error message indicate the li...

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sajith_appukutt
by Databricks Employee
  • 3498 Views
  • 2 replies
  • 1 kudos
  • 3498 Views
  • 2 replies
  • 1 kudos
Latest Reply
AdrianRojas
New Contributor II
  • 1 kudos

a bit old, but I just faced the same issue, specifying a custom EncryptionMaterialsProvider (as described in the previous post) did the trick for me but I did had to also specify my kms endpoint, just because my region:"fs.s3.cse.kms.endpoint" -> "km...

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1 More Replies
Samit110978
by New Contributor II
  • 3518 Views
  • 3 replies
  • 1 kudos

Passing Parameter from SSRS to Databricks user defined function

I am trying to pass parameter from SSRS to User Defined Function in Databricks which in turn will return table that will be shown as output in report.I tried below calling function from SSRS, but it looks like parameter value is not passed. I have di...

  • 3518 Views
  • 3 replies
  • 1 kudos
Latest Reply
Aviral-Bhardwaj
Esteemed Contributor III
  • 1 kudos

can you share full code and dataset by that we can also debug this

  • 1 kudos
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